Answer:
9) x=3
10)x=8.5
Explanation:
Because M is a midpoint, for both questions, the equations on M's either sides are equal.
9) 5x+9=24
Subtract 9 from both sides
5x=15
Divide by 5 on both sides
x=3
10) 3x-7=x+10
Add 7 to both sides and subtract x from both sides
2x=17
Divide by 2
x=8.5